From: Mike Christie <michael.christie@oracle.com>
To: bvanassche@acm.org, hch@lst.de, martin.petersen@oracle.com,
linux-scsi@vger.kernel.org,
james.bottomley@hansenpartnership.com,
linux-block@vger.kernel.org, dm-devel@redhat.com,
snitzer@kernel.org, axboe@kernel.dk,
linux-nvme@lists.infradead.org, chaitanyak@nvidia.com,
kbusch@kernel.org, target-devel@vger.kernel.org
Cc: Mike Christie <michael.christie@oracle.com>
Subject: [PATCH v3 05/19] dm: Add support for block PR read keys/reservation
Date: Wed, 26 Oct 2022 18:19:31 -0500 [thread overview]
Message-ID: <20221026231945.6609-6-michael.christie@oracle.com> (raw)
In-Reply-To: <20221026231945.6609-1-michael.christie@oracle.com>
This adds support in dm for the block PR read keys and read reservation
callouts.
Signed-off-by: Mike Christie <michael.christie@oracle.com>
---
drivers/md/dm.c | 44 ++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 44 insertions(+)
diff --git a/drivers/md/dm.c b/drivers/md/dm.c
index 95a1ee3d314e..f7f806890c92 100644
--- a/drivers/md/dm.c
+++ b/drivers/md/dm.c
@@ -3312,12 +3312,56 @@ static int dm_pr_clear(struct block_device *bdev, u64 key)
return r;
}
+static int dm_pr_read_keys(struct block_device *bdev, struct pr_keys *keys,
+ u32 keys_len)
+{
+ struct mapped_device *md = bdev->bd_disk->private_data;
+ const struct pr_ops *ops;
+ int r, srcu_idx;
+
+ r = dm_prepare_ioctl(md, &srcu_idx, &bdev);
+ if (r < 0)
+ goto out;
+
+ ops = bdev->bd_disk->fops->pr_ops;
+ if (ops && ops->pr_read_keys)
+ r = ops->pr_read_keys(bdev, keys, keys_len);
+ else
+ r = -EOPNOTSUPP;
+out:
+ dm_unprepare_ioctl(md, srcu_idx);
+ return r;
+}
+
+static int dm_pr_read_reservation(struct block_device *bdev,
+ struct pr_held_reservation *rsv)
+{
+ struct mapped_device *md = bdev->bd_disk->private_data;
+ const struct pr_ops *ops;
+ int r, srcu_idx;
+
+ r = dm_prepare_ioctl(md, &srcu_idx, &bdev);
+ if (r < 0)
+ goto out;
+
+ ops = bdev->bd_disk->fops->pr_ops;
+ if (ops && ops->pr_read_reservation)
+ r = ops->pr_read_reservation(bdev, rsv);
+ else
+ r = -EOPNOTSUPP;
+out:
+ dm_unprepare_ioctl(md, srcu_idx);
+ return r;
+}
+
static const struct pr_ops dm_pr_ops = {
.pr_register = dm_pr_register,
.pr_reserve = dm_pr_reserve,
.pr_release = dm_pr_release,
.pr_preempt = dm_pr_preempt,
.pr_clear = dm_pr_clear,
+ .pr_read_keys = dm_pr_read_keys,
+ .pr_read_reservation = dm_pr_read_reservation,
};
static const struct block_device_operations dm_blk_dops = {
--
2.25.1
next prev parent reply other threads:[~2022-10-26 23:23 UTC|newest]
Thread overview: 54+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-10-26 23:19 [PATCH v3 00/19] Use block pr_ops in LIO Mike Christie
2022-10-26 23:19 ` [PATCH v3 01/19] block: Add PR callouts for read keys and reservation Mike Christie
2022-11-02 22:50 ` Bart Van Assche
2022-11-03 1:54 ` Mike Christie
2022-11-02 22:53 ` Bart Van Assche
2022-11-03 2:25 ` Mike Christie
2022-10-26 23:19 ` [PATCH v3 02/19] scsi: Rename sd_pr_command Mike Christie
2022-11-01 5:33 ` Chaitanya Kulkarni
2022-10-26 23:19 ` [PATCH v3 03/19] scsi: Move sd_pr_type to header to share Mike Christie
2022-11-01 5:43 ` Chaitanya Kulkarni
2022-11-01 16:43 ` Mike Christie
2022-11-02 22:47 ` Bart Van Assche
2022-11-03 2:13 ` Mike Christie
2022-11-03 18:14 ` Bart Van Assche
2022-10-26 23:19 ` [PATCH v3 04/19] scsi: Add support for block PR read keys/reservation Mike Christie
2022-11-01 5:45 ` Chaitanya Kulkarni
2022-11-02 22:54 ` Bart Van Assche
2022-10-26 23:19 ` Mike Christie [this message]
2022-10-26 23:19 ` [PATCH v3 06/19] nvme: Fix reservation status related structs Mike Christie
2022-10-27 17:04 ` Keith Busch
2022-10-26 23:19 ` [PATCH v3 07/19] nvme: Don't hardcode the data len for pr commands Mike Christie
2022-10-27 17:05 ` Keith Busch
2022-11-01 5:29 ` Chaitanya Kulkarni
2022-10-26 23:19 ` [PATCH v3 08/19] nvme: Move pr code to it's own file Mike Christie
2022-10-27 17:06 ` Keith Busch
2022-10-28 16:06 ` Mike Christie
2022-10-28 16:38 ` Keith Busch
2022-10-30 8:06 ` Christoph Hellwig
2022-11-01 5:25 ` Chaitanya Kulkarni
2022-10-26 23:19 ` [PATCH v3 09/19] nvme: Add pr_ops read_keys support Mike Christie
2022-10-30 8:17 ` Christoph Hellwig
2022-10-30 20:47 ` Mike Christie
2022-10-26 23:19 ` [PATCH v3 10/19] nvme: Move NVMe and Block PR types to an array Mike Christie
2022-10-27 15:18 ` Keith Busch
2022-10-27 17:06 ` Mike Christie
2022-10-27 17:13 ` michael.christie
2022-10-27 17:16 ` Keith Busch
2022-10-28 16:05 ` Mike Christie
2022-10-26 23:19 ` [PATCH v3 11/19] nvme: Add pr_ops read_reservation support Mike Christie
2022-10-30 8:18 ` Christoph Hellwig
2022-10-30 20:54 ` Mike Christie
2022-10-26 23:19 ` [PATCH v3 12/19] block,nvme,scsi,dm: Add blk_status to pr_ops callouts Mike Christie
2022-10-30 8:20 ` Christoph Hellwig
2022-10-30 23:05 ` Mike Christie
2022-11-01 10:15 ` Christoph Hellwig
2022-11-05 18:36 ` Mike Christie
2022-11-07 9:16 ` Christoph Hellwig
2022-10-26 23:19 ` [PATCH v3 13/19] nvme: Have NVMe pr_ops return a blk_status_t Mike Christie
2022-10-26 23:19 ` [PATCH v3 14/19] scsi: Export scsi_result_to_blk_status Mike Christie
2022-10-26 23:19 ` [PATCH v3 15/19] scsi: Have sd pr_ops return a blk_status_t Mike Christie
2022-10-26 23:19 ` [PATCH v3 16/19] scsi: target: Rename sbc_ops to exec_cmd_ops Mike Christie
2022-10-26 23:19 ` [PATCH v3 17/19] scsi: target: Allow backends to hook into PR handling Mike Christie
2022-10-26 23:19 ` [PATCH v3 18/19] scsi: target: Don't support SCSI-2 RESERVE/RELEASE Mike Christie
2022-10-26 23:19 ` [PATCH v3 19/19] scsi: target: Add block PR support to iblock Mike Christie
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